clk: rockchip: rename the clk id for HCLK_I2S1_2CH

i2s1 has 2 channels but not 8 channels.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

[and the clock id hasn't been used in either clock-driver nor dts,
 so is safe to rename]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

include/dt-bindings/clock/rv1108-cru.h

@@ -144,7 +144,7 @@
 
 /* hclk gates */
 #define HCLK_I2S0_8CH			320
-#define HCLK_I2S1_8CH			321
+#define HCLK_I2S1_2CH			321
 #define HCLK_I2S2_2CH			322
 #define HCLK_NANDC			323
 #define HCLK_SDMMC			324